The electrophile involved in the sulphonation of benzene is
The most reactive compound for electrophilic nitration will be
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Acetylene reacts with ammonical silver nitrate to form
In its reaction with silver nitrate acetylene shows
For principle quatum number n = 4, the total number of orbitals having l = 3 is
If NaOH is added to an aqueous solution of zinc ions a white precipitate appears and on adding excess of NaOH, the precipitate dissolves. In this solution, zinc exists in the
The maximum number of electrons in p-orbital with n = 6 ; m = 0 is
For l = 3, the corresponding values of magnetic quantum numbers would be
Among the following compounds, which has a dipole moment greater than zero?
The heat of neutralisation, when 0.5 mole of HNO₃ solution is added to 0.2 moles of NaOH solution, is (Heat of neutralisation = 57 KJ-mol-1)
A gas bulb is filled with NO₂ gas and imersed in an ice bath at 0oC which becomes colourless after sometime. This colourless gas will be
The rate of reaction is doubled for every 10o rise in temperature. The increase in reaction rate as a result of temperature rise from 10o to 100o is
If 0.75 mole of an ideal gas is expanded isothermally at 27oC from 15 litres to 25 litres, then work done by the gas during this process is (R = 8.314J-K-1-mol-1)
Which of the following is the function of aspirin?
The general electronic configuration (n - 1)d3ns2 indicates that particular element belongs to
The d-electron configurations of Cr2+, Mn2+, Fe2+ and Ni2+ are 3d4, 3d5, 3d6 and 3d8 respectively. Which one of the following aqua complexes will exhibit the minimum paramagnetic behaviour?
(At No. Cr = 24, Mn = 25, Fe = 26, Ni = 28)
The mass of carbon anode consumed (giving only carbon dioxide) in the production of 270 kg of aluminium from bauxite by Hall process is (Atomic weight of AI = 27)
When the product of pressure and volume is plotted against pressure for a given amount of the gas, the line obtained is
What is the reaction occuring at the anode in Down's process for the extraction of sodium?
Purification of aluminium by electrolytic refining is known as
A mixture of carbon monoxide, hydrogen and hydrocarbons is known as